Getting ready to do some fuel system TLC. Having a couple issues I'm hoping to resolve in the process.
*Stubborn warm starts (after shutting off about 10-30 min). Someone told me this is leaky injectors, so I picked up a new set.
*Strange exhaust smell. I've never smelled anything like it so not sure what to compare it to. I suppose it smells like bad gas, but it doesn't change with fresh fuel. Pretty thick smell too, wafts into the cabin at stops. Looks like a PO replaced the exhaust at some point, so no idea what condition the cat is in. No smoke of any kind.
The inside of my gas tank is very rusty, so I plant to drop it and clean it up. Then replace the filter etc...
Given those issues specifically, what else should I look for? O2 sensor, other sensors?